I recently installed a HorseFlame multi fuel stove (it's called a Gabriel 6kw, similar to Stanley Oisin). Its connected to an unlined flue using a 90 bend and a 5" to 8" reducer.
Lighting the stove and building the fire up to grate level goes fine and everything seems to be working as it should but my problem is that the stove does not seem to be putting out any real heat. It is significantly worse than the previous open fire. When the fire is in full flight you can actually pat it as if it was an oil heater. It's like as if the heat is being contained inside the stove instead of being dispersed
The draw of air through the stove seems reasonable and I am burning the best anthracite. With all the talk about how fantastic stoves are I am really disappointed as I was expecting to be walking around in my underwear drinking margaritas by now.
Any advice would be greatly appreciated.